• Author / Uploaded
• Andrès Landaeta

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STEERING SYSTEM

SECnONST CONTENTS PRECAUTIONS PREPARATION ON-VEHICLE INSPECTION STEERING WHEEL AND STEERING COLUMN POWER STEERING GEAR AND LINKAGE (Model PR26SE) POWER STEERING OIL PUMP , TWIN ORIFICE POWER STEERING SYSTEM TWIN ORIFICE POWER STEERING SYSTEM - Trouble Diagnoses TWIN ORIFICE POWER STEERING SYSTEM Trouble Diagnoses (Without SUPER HICAS system) TWIN ORIFICE POWER STEERING SYSTEM Trouble Diagnoses (With SUPER HICAS system) SUPER HICAS SYSTEM SUPER HICAS SYSTEM - On-vehicle Inspection SUPER HICAS SYSTEM - Repair of Component Parts SUPER HICAS SYSTEM - Trouble Diagnoses SERVICE DATA AND SPECIFICATIONS (S.O.S.)

ST- 2 ST- 3 ST- 5 ST-10 ST-14 ST-26 ST-29 ST-31 ST-32 ST-42 ST-43 ST-44 ST-48 ST-60 ST-97

When you read wiring diagrams: • Read GI section, "HOW TO READ WIRING DIAGRAMS". • See EL section, "POWER SUPPLY ROUTING" for power distribution circuil. When you perform trouble diagnoses, read GI section, "HOW TO FOLLOW FLOW CHART IN TROUBLE DIAGNOSES".

PRECAUTIONS • •

•

•

• •

•

*.

Before disassembly, thoroughly dean the outside of the unit. Disassembly should be done in Ii clean work area. It is important to prevent the Internal parts from becoming contaminated by dirt or other foreign matter. When disassembling parts, be sure to place them in order in a parts rack so they can be reinstalled in their proper positions. Use nylon cloths or paper towels to clean the parts; common shop rags can leave lint that might interfere with their operation. Before Inspection or reassembly, carefully clean all parts with a general purpose, non-flammable solvent. Before assembly, apply a coat of recommended A.T.F.* to hydraulic parts. Vaseline may be applied to O-rings and seals. Do not use any grease. Replace all gaskets, seals and O-rings. Avoid daml\ging O-rings, seals and gaskets during installation. Perform functional tests whenever designated. Automatic transmission fluid

ST-2

PREPARATION SPECIAL SERVICE TOOLS Tool number Tool name

Description

KV48100700 Torque adapter

Measuring pinion rotating torque

ST27160001 Steering wheel puller

Removing steering wheel

HT72750000

Removing ball joint

Ball joint remover

ST27091000

Measuring oil pressure

Pressure gauge

Shut-off valve

KV481 02500

Measuring oil pressure

Pressure gauge adapter

ST3127S000 (DGG91030000 Torque wrench

(!)HT6294000 Socket adapter (!)HT62900000 Socket adapter

(j)\;,1fC~=6=o

Measuring turning torque

®--{J

®~

KV481 04400

Reforming teflon ring

Rack seal ring reformer

KV32101100 Pin punch

Removing and installing tube seat

ST-3

PREPARATION COMMERCIAL SERVICE TOOLS Tool name

Description

Rear oil seal drift

Installing rear oil seal

Pinion oil seal drift

Installing pinion oil seal

Oil pump attachment

Disassembling and assembling oil

R2110.83)

Welding \1. \0.1.1'

11 10.43) di8.

40 11.57)

.....JJ/:r-~12

'4!l~.~10.47)

,

~

Spdng

.>

I

Pulley

~~

\

O-dng~1'l

~ 1'1

Control valve

'

~ .

Pin

Gaske::"tiil

Sub-bracket

Rear housing

\

~,

~ 31 ·4213.2 ·4.3, 23 ·31)

N,m {kq-m, tt-tbl SST3318

Pre-disassembly Inspection Disassemble the power steering oil pump only if the following items are found. • Oil leak from any point shown in the figure, • Deformed or damaged pulley. • Poor performance

SST1288

ST-26

POWER STEERING OIL PUMP

Disassembly CAUTION: • Parts which can be disassembled are strictly limited. Never disassemble parts other than those specified. • Disassemble in as clean a place as possible. • Clean your hands before disassembly. • Do not use rags; use nylon cloths or paper towels. • Follow the procedures and cautions in the Service Manual. • When disassembling and reassembling, do not let foreign mailer enter or contact the parts. • Remove snap ring, then draw drive shaft out. Be careful not to drop drive shaft.

[ } - - - Extension bar

~_~~~~~orive shaft SST010B

• Remove oil seal. Be careful not to damage front housing.

• Remove connector. Be careful not to drop control valve.

Front houling

SST036A

Inspection Inspect each component part for wear, deformation, scratches, and cracks. If damage is found, replace the part.

ST-27

POWER STEERING OIL PUMP Assembly Assemble oil pump, noting the following instructions. • Make sure O-rings and oil seal are properly installed. • Always install new O-rings and oil seal. • Be careful of oil seal direction. • Cam ring, rotor and vanes must be replaced as a set if necessary. • Coat each part with AT.F. when assembling. SST038A

Rear housing side

•

Pay attention to rotor direction.

•

When assembling vanes to rotor, rounded surfaces of vanes must face cam ring side.

•

Insert pin ® into pin groove CD of front housing and front side plate. Then install cam ring ® as shown at left.

Front housing side Punchmark

SST289A

Vane Faces inside

Flat portion

Round portion

-....::~CS;~

SST843A

t Front houling side 'I RIO' housingside SST497A

ST·28

TWIN ORIFICE POWER STEERING SYSTEM

Hydraulic Circuit

Steering gear assembly

r-----------------, i Rotary valve J

,

, ,I I

I

,,:

Power cylinder

Speed sensor

Reservoir tank

Pump

rr-r-:

I I I I

Solenoid valve

I I I

I I I

I I

I I I I

I

,I

Control unit

,

~------------------~

SST630B

Schematic Without SUPER HICAS (Refer to SUPER HICAS Schematic for models equipped with SUPER HICA$.)

IGNITION SWlTCH ON

or

START

CHECK

CONNECTOR

@

To stop lamp

*

@ ~m~lNG

FUSE

FUSE

0 STO? LAMP SW! TCH

101m

n U @

ITI:!:liI3l1M65' ~~

SOLENOID lZlliJ VALVE POWER STEERING CONTROL UNJ T

,

3 --:°"1

r

ELECTRIC@

SPEEDOMETER

INHIBITOR

SWITCH

VEHICLE

~ ,A/T model @:M/T model

NEUTRAL

SWI TCH

@(ill)I

PARKING BRAKE

SWITCH

§)~

ST-29

CLUTCH

SPEED SENSOR

SWITCH

m:'l@

SST5548

'"

In

;ec

(Jl (Jl

~~'O'

~

t/)

W ev &- "V

E~r

"

FUSE BLOCK Un RELAY BOX) (Refer to "'POWER SUPPLY ROUTING" in EL section.)

~£

~ I::

A/1

~~B

r::==:J--..i),

VALVE

POWER STEERING SOLENOID

BODY GROUND

III

, -e

u

'"

1lI-